... : 10k, 16k Type: A, AS, B, BS, C, CS, D, DS, E, ES Air Vent HeadAir Vent Head can be used on water tank and ... oil tank.Size: 50A-500APressure: 10k, 16kType: A, AS, B ... -94, DIN, ISONote:Oil Tank Air Vent head has character of cover on top of head.Water Tank Air Vent head has character of permeability ...